[jseliger]

>SF has plenty of opportunities to build upward, but as long as SF insists on being anti-development and anti-height, the housing supply problem is going to continue.

Bingo. This: http://www.slate.com/articles/business/moneybox/2012/05/face... is good further reading if you're interested in the issue.

I think we've now gotten to such an absurd place in coastal city building markets that more people are interested in learning about the fundamental forces at work. Matt Yglesias, who wrote the linked article above, is fond of pointing out that we can use complex, advanced technologies like elevators and steel to greatly ameliorate housing affordability problems.